Polishing element for rattling devices.



T. A. DE VILBISS. POLISHING-ELEMENT FOR RAT'ILING DEVICES. APPLICATION FILEDPEB 25. 1914.

WITNESSES:

INVENTOR.

Patented Mar. 30, 1915.

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THOMAS A. DE VILJBTSS, .015 TOLEDO, OI-IIO, ASSIGNOR TO THE DE VILBIS$ MANUFAC- TUBING COMPANY, 015 TOLEDO, QHIO, A CGBPORATION OF OHIO.

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Specification of Letters Patent.

Patented ll Tar. 341}, Math.

Application filed February at; 1914. Serial no. recent.

scription of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being-had to the accompanying drawings, and to the characters of reference marked thereon, which form a part of this specification.

This invention relates to tumbling or rattling de'vieesof the class" employed in con'' nection with the cleaning or polishing of small articles, and has particular reference to the formation of the loose rattling or tumbling partsor elements which have polishing or cleaning contact with the articles. The invention is not restricted to such use, however, as it may be used in any connection for which it is adapted or appropriate.

The object of my invention is the provision of a rattling or tumbling element of the character described, which is other than of true spherical form, whereby it may adapt itself to the different curvatures, or to openings, recesses, or the like, of different sizes and shapes, and to irregularities in the articles being operated on, thus making the finishing of articles with rattling elements of this class more rapid and efficient than is possible with elements of the spherical type. Further objects and advantages of the invention will be apparent from the following detailed description.

The inventionv is fully described in the following specification, and while, in its broader aspect, it is capable of embodiment in numerous forms, a preferred embodiment thereof is illustrated. in the accompanying drawings, in which,

Figure l is a side view of the preferred form of rattling element embodying my invention. Fig. 2 is a side elevation of a plurality of such elements arranged in circular form to illustrate that the outer sides of such elements when so arranged form arcs of a common circle. Figs. 3 and 4: are side views of difierent forms of elements from that shown in Fig. 1, and Figs. 5 and 6 are enlarged longitudinal and cross sec tions, respectively, of the element shown in Fig. 1, with' such sections taken on the major and minor axes thereof.

Inorder to secure a rapid and" eWcient polishing or cleaning of articles by the tum bling or rattling process it has been found from experiments that the rattling elements preferably should be of curved elongated formto present broadcontacting surfaces to the articles being operated on, and also to make one or both of the end portions of an element of more or less pointed form to enable such end or ends to project into openings or recesses of difierent sizes and to automatically'a'djust' itself to the size of the opening, or m other words, to move a greater er less extent into the-cpeeingsas the size of the opening or recess may permit.

The element shown in Fig. 1 and designated 10 is substantially circular in crosssection from one end to the otherthereof, and has opposite sides forming arcs, which are struck from difi'erent axes, with such arcs preferably disposed without the element, or, in other words, a lurality of elements may be arranged en to end in circular form with their outer sides forming adjoining arcs of a circle and with their inner sides struck from points within the circle and being of the same radii as the outer arcs.

lln Fig. 3 the rattling element, which is designated 11, is shown as being of elliptical form in longitudinal section, and in Fig. 4 the element, which is' designated 12, is shown as being of egg-form, or, in other words, combining the features of both elements 10 and 11 having one end of pointed form and the other end curved in the form of the end of an ellipse.

lit will be understood that the invention is not limited to articles of the forms shown, but that such forms are merely illustrative in their character and the element may be of numerous other forms having major and.

s herical form. It is preferable. to taper or Me gradually restrict an end portion of an element outwardly from or adjacent to its center of gravity.

It is found in practice that the use of rattling elements of the type substantially as shown in Fig. 1 will polish articles in a'very much more eflicient manner than elements of the spherical type and in from one-third to one-quarter the time, thus enabling work to be turned out very much more rapidly by the use of rattling elements of the character shown than is possible with spherical ratfling-elements, and consequently elfecting a materialsaving in the expense incident to the polishingand cleaning of articles by the rattling-or tliinbling process.

In the use-of the spherical type of rattling elements, it is necessary to change the size of. the elementto suit the work being acted on or in other words the elements must be of sufficient size to prevent the complete passage thereof into openings in the article. With applicants form of rattling element one sizemay be used for work having numerous sized openings and the element is at the same time adapted for entry or fitting into recesses and uneven surfaces to polish the same due to the oblong or pointed form thereof.

I wish it understood that my invention is not limited to any specific form, construction or material, as numerous modifications may be made within the spirit of the invention.

Having thus described my invention, What I claim as new, and desire to secure by Letters Patent, is,

A metal polishing element of the class described which is elongated in form, circular in cross-section throughout its length and terminating at each end in a point, said element having lengthwise extending side arcs intersecting at the ends thereof.

In testimony whereof, I have hereunto signed my name to this specification in the presence of two subscribing witnesses.

THOMAS A. DE VILBISS.

Witnesses:

S. T. KLoTz, F. E. AUL. 

